The Wimbledon champion had looked in good nick in reaching the semi-finals at Roland Garros for only the second time.

Again Nadal was his opponent but unlike 2011, when he gave the Spaniard a real test, Murray simply had no answers in a 6-3 6-2 6-1 defeat, his heaviest ever grand slam loss.

Nadal will now bid to win an unprecedented ninth French Open title and fifth in a row when he takes on Novak Djokovic in the final on Sunday.

Murray said: "He played a great match. He missed hardly any balls. He served very well.

"His forehand, especially with the conditions the way they were today, it was incredibly hard to control the ball. As soon as he was inside the court, he was hitting the ball so close to the line. He played great tennis.

"It was a tough day for me. It was a bad, bad day. I'll need to bounce back quickly from it, because I'm not particularly happy with the way I played today."

While Murray may want to lick his wounds, he must head straight home to London to begin preparing for the Aegon Championships at Queen's Club next week.

He will defend his title there and then in just over two weeks' time he will step out on Centre Court as the defending champion at Wimbledon.

Murray said: "It's difficult because I normally strike the ball fairly cleanly. Today I was mishitting a lot of balls. It was incredibly frustrating. I wanted to play better and better as the match went on.

"In some ways you start trying too hard, and it doesn't always appear that way. But you want to do stuff too badly, and you end up making more mistakes and things get worse.

"I never want to say forget about matches like this, but obviously the grass-court season starts in a couple of days and I need to switch my mind to that."

Murray did not want to blame fatigue but it was clear there was not the same energy about the Scot as there normally is when he plays his biggest rivals.

He had played two five-set matches for the first time at a grand slam in getting to the semi-finals, including the longest fifth set he had ever played against Philipp Kohlschreiber in round three.

That was also Murray's first five-set match since his back surgery last September and his physical stamina was not up to its usual standards.

He had spent four and a half hours longer on court than Nadal, but the 27-year-old knew he only had himself to blame after failing to finish matches as quickly as he should have, particularly Kohlschreiber and his quarter-final against Gael Monfils.

Murray said: "I was in control of a lot of the matches that went longer than maybe they should have been. So if that did have anything to do with it, it was completely my fault.

"But ideally, playing against him on this surface, the way he's hitting the ball today, you have to do a lot of running, chase a lot of balls down. I couldn't get enough back."

One of the most damning statistics was that Murray won just 10 points on the Nadal serve all match, forcing only one deuce.

"He served very close to the lines," he said. "The ball was coming through the court quicker today.

"My timing was off on the returns. It is easy to just say, 'Oh he served well and I missed quite a lot of returns'. But the problem is, if you don't do anything with the return, he was just battering the next ball into the corner."